Sand, gravel, and stone cleaning machine



F. AND 1. LE 0000. SAND, GRAVEL, AND STONE CLEANING MACHINE.

APPLICATION FILED APR.23| 1920. I

Patented Nov. 1-, 1921.

3 SHEETS-SHEET 1- F. AND 1. LE'COCQ.

SAND, GRAVEL, AND STONE CLEANING MACHINE. APPLICATION HLED APR. 23,1920.

. 1,395,? 1 7 Patented Nov. 1, 1921.

3 SHEETSSHEET 2- F. AND I. LE COCQ.

SAND, GRAVEL, AND STONE CLEANING MACHINE. APPLICATION FILED M123, 1920-.

5 1 Patented Nov. 1, 1921.

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' FRANK LE COCQ AND IRWIN LE GOCQ," OF ABERDEEN, SOUTH DAKOTA.

SAND, GRAVEL, AND STONE CLEANING MACHINE.

Specification'of Letters Patent.

Patented Nov. 1, 1921.

Application filed April 23, 1920. Serial No. 376,179.

invented a new and useful Sand, Gravel,-

and Stone Cleaning Machine, of which the following is a specification.

The invention relates to a means for removing foreign material from selected materials following the grading of the latter by a revolving. screen.

Machines have been heretofore provided for the separation of sand, gravel and stone through the use of a revolving screen of ordinary character, and the delivery of such materials when graded as to size into separate receptacles. It is apparent that in such grading, foreign materials of the same size will pass through the area of'the revolving screen with the selected materials, and it is the object of the present invention to interpose in the path of travel of such graded selected materials, screens over which the graded materials will be directed, in separate paths, and to subject such materials to a regulation blast of air in order that through such blast, the separation of lighter materials may be had.

The invention is illustrated in the accompanying drawings Figure 1 is a view in side elevatlon of the machine mounted upon a support.

Fig. 2 is a front elevation of the same.

Fig. 3 is an enlarged perspective view of the separator forming the subject matter of the invention.

Fig. 4c is a plan of the same with the deflectors removed.

Fig. 5 is a'pla-n of the horizontal partition, the valves being omitted.

Fig. 6 is a plan and end deflectors.

Fig. 7 is an elevation of one of the partitions, showing the valve therein.

Fig. 8 is a section on line 88 of Fig. 7.

Fig. 9 is a perspective View of a slightly modified form of the separator.

In the improved machine, the material in bulk is raised by means of the elevator indicated diagrammatically at 1 to an inclosed revolving screen 2 being delivered from the elevator to the screen through a hopper 2. The screen 2 which is of course of diiferent mesh, at this point at the length of the material, will grade the material acview of one of the cording to size and deliver the same in the chutes 3, 4c, 5 and 6. These chutes deliver the material across the separator forming the subject matter of this invention. This separator in the form shown in Fig. 3 comprises-a rectangular hollow casingformed inthe upper wall thereof with openings adapted to be covered by screens 8, 9, 10 and 11.. These screens are directly in the path of the delivery ends of the chutes 3, 1, 5 and 6, respectively, so that the material from the chutes is delivered ina fine stream across the screen. The interior of the casing of the separator is divided intermediate the screen openings by partitions 12, so that there is formed within, the separator a chamber 13 for each screen opening. These partitions 12 are formed with openings 14, and valves 15 are arranged for slidable mounting on the partitions, as shown in Fig. 7 and controlled by rods 15 in order that the size of any particular opening 14 may be regulated as desired. Overlying each screen opening is a deflector 16, preferably a metal strip secured at one edge to one edge of the opening, and curved upwardly and over the opening and beyond the opposite edge thereof. A blower 17 of appropriate power communicates through pipe 18 with the separator and from this construction it will be obvious that the air pressure admitted, to any one chamber of the separator, that is, the air pressure permitted to be directed through any one screen opening may be controlled by suitably positioning the said valve or valves 15.

,Below the separator, as indicated in Figs. 1 and 2, are arranged chutes 19, 20, 21 and 22 to receive the material passing over and by the screens and deliver the same into bins 23, 24., 25 and 26.

In Fig. 9, the separator is shown as having a horizontal partition 27 dividing the upper and lower portion thereof, the lower portion being freely open to the air, and the area of the separator above said partition 27 being divided by vertical partitions 28, 29 and 30, into the desired chambers as in the preferred form. In this instance the air openings 31 are in the bottom of each chamber, as formed by the horizontal partition, the valves 15 and control rods 15 The material passing over the screens are thus sufficient to regulate an air blast and the lighter material will be thus separated from the selected material, and such lighter material will be deflected by the deflectors 16 beyond such selected material, and then permitted to deposit into any desired collection receptacle.

Claims.

1. A separator for grading machines including a plurality of screens, means for delivering a distinctive grade of material over each of the screens, a hollow body carrying said screens, partitions dividing said body into chambers to provide a separator chamber for each screen, means for directing an air blast into the body and through said openings and screens successively, and a valve for controlling the admission of said air blast to each chamber, the air blast when admitted to each chamber passing upwardly through the screen.

2. A separator for grading machines, comprising a hollow body divided by partitions to form a plurality of chambers, and openings leading to each chamber, a valve for each opening in each partition, means for regulating each valve, a screen closing an opening at the top of the chamber and over which a particular grading of material is to be directed, and means for directing an air blast into said hollow body and through said gpenings and screens successively.

3. separator for grading machines, comprising a hollow body, a plurality of chambers, and openings leading to each chamber, a valve for eachopening, means for regulating each valve, a screen closing an opening at the top of the chamber and over which a particular grading of material is to be directed, the screen being formed to prevent the passage of such material therethrough, and means for directing an air blast into said hollow body, and deflectors carried by the body and curving over and extending beyond each screen.

FRANK LE COCQ. IRWIN LE COCQ.

Witnesses:

FRANKI. SIEH, F. E. FLYNN. 

